Triumph Sports Cars

engine swaps and other performance upgrades, plus "factory" V8s (Stag and TR8)

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Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: April 12, 2023 08:39PM

sealed body2.jpg


mrmom9822443@gmail.com
Daniel Smith

(10 posts)

Registered:
09/08/2016 05:52AM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: mrmom9822443@gmail.com
Date: April 16, 2023 05:12PM

Glad to see you're making progress Kenny. Thanks for sharing with us. The 3.6 LFX looks like an excellent choice for swapping in a TR6. I have a TR 250 I'm thinking about doing the same swap. I was wondering if you have considered what type of ECU you will use.
Keep up the great work! Dan


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: April 16, 2023 08:20PM

Thank You!
I would recommend a E39 (stock ECM) from Kiesler Automation, quick turn around and lots of parts. Thats also where i got the Exhaust down pipes from. DO NOT order anything from Swap Specialties, I'll leave it at that.

Tracy Lewis Performance is the guy i plan on getting the car tuned by.
If you do decide to go this route let me know and I'll pass along all my mistakes so far. no reason for you to repeat them.



Edited 2 time(s). Last edit at 05/17/2023 10:06PM by Kard150.


mrmom9822443@gmail.com
Daniel Smith

(10 posts)

Registered:
09/08/2016 05:52AM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: mrmom9822443@gmail.com
Date: April 17, 2023 10:13AM

Thank you Kenny. Appreciate your passing that on.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: May 04, 2023 10:38PM

wheels and tires2.jpg


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: May 17, 2023 10:09PM

Getting ready for the driveshaft and then exhaust
frame-motor-trans.jpg


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: May 17, 2023 10:22PM

sway bar.jpg

sway bar mod.jpg



Edited 1 time(s). Last edit at 07/01/2023 10:09PM by Kard150.



BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 76 TR6 with GM 3.6 LFX
Posted by: BlownMGB-V8
Date: May 18, 2023 08:06AM

Kenny, here's something else for you to check while it's exposed. Dan used solid mounts for his steering rack in his TR4A and recently had a problem with a catch in the steering. After replacing the joints in the column and a bunch of testing and swapping we finally traced it down to the tightening procedure for the rack. It seems he had taken a little extra trouble to remove any slack between the mounts and the rack body so it couldn't shift from side to side and the result somehow put the rack in a light bind and caused it to get tight at one spot. When we loosened the mounts up it went away. Then we found a tightening sequence that didn't make it tighten up. I think it was caused by prying the solid mounts against the rack flanges but that's something that should be easier to check now than later. We did the final tightening without any sideways prying and that worked fine. I think the clamps are enough to keep the rack from shifting sideways, which of course the OEM rubber mounts allowed to some degree.

Jim


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: May 18, 2023 01:08PM

Thanks Jim, i know there is a little plastic button that as i understand is something to be careful with. I'll have to put the steering together enough to see.


TR6-6SPD
Ken Hiebert
Toronto Ontario
(255 posts)

Registered:
04/23/2008 11:43AM

Main British Car:
1972 TR6 1994 5.7 L GM LT1

authors avatar
Re: 76 TR6 with GM 3.6 LFX
Posted by: TR6-6SPD
Date: May 22, 2023 09:50AM

I'm using a quick rack with solid mounts on my TR6. It's very sensitive in regards to it's positioning. I use washers to space it and take it easy on torqueing, otherwise it will bind.
The rack itself us to be set up properly too.
It's a pain.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: May 22, 2023 05:24PM

Hey Ken, I spent most of the time just trying to get it centered and even side to side but you're saying the rack itself needs a certain set up?


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 09, 2023 10:54PM

Finally made a little more progress, I got my driveshaft adapter made and test fitted. It took a couple tries but I like the results, now if only the stock driveshaft and U joints will hold up. Adapter is .50 thick 7075-T6

Also tried out a 3d printed spacer on the brake Booster, it still needs some work.
taping adapter.jpg

driveshaft adapter 3.jpg

driveshaft adapter.jpg

driveshaft mockup.jpg



Edited 2 time(s). Last edit at 07/01/2023 10:06PM by Kard150.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 09, 2023 10:55PM

booster block test.jpg


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 11, 2023 10:59AM

Muffler mock up
muffler mock up 2.jpg

muffler mock up.jpg



Edited 1 time(s). Last edit at 07/01/2023 10:06PM by Kard150.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 11, 2023 11:01AM

muffler mock up 3.jpg



Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 17, 2023 07:30PM

Let me just say anyone thinking about doing this type conversion you need to sort out the exhaust FIRST, what a pain!!
frame update 3 t shirt.jpg

I followed Calvin Grannis idea of putting a X pipe inside the T shirt...It doesn't fit very well, very tight and I'm sure its going to get hot.
if you plan on this you need to fit it first and then decide where you're going to run your brake lines.



Edited 1 time(s). Last edit at 06/18/2023 10:07AM by Kard150.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 19, 2023 03:22PM

left side exhaust.jpg

left side exhaust 2.jpg

rt side 4.jpg



Edited 1 time(s). Last edit at 07/01/2023 10:07PM by Kard150.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: 76 TR6 with GM 3.6 LFX
Posted by: BlownMGB-V8
Date: June 21, 2023 07:45AM

That certainly simplifies the exhaust plumbing. Can't say it would do much for extraction so it would seem the performance potential would be limited. Still, how much is enough?

Jim


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: June 21, 2023 02:57PM

Its the stock set up with an X pipe. The hot ticket from what I've read is they swap out the LFX heads for the older style LLT heads ported for the larger valves with traditional headers. I can't imagine trying to make headers fit in this tight space.



Edited 1 time(s). Last edit at 06/21/2023 06:51PM by Kard150.


Kard150
Kenny Ard

(84 posts)

Registered:
12/03/2021 03:15PM

Main British Car:


Re: 76 TR6 with GM 3.6 LFX
Posted by: Kard150
Date: July 01, 2023 04:20PM

ehaust tunnel rt2.jpg

resonator rt side.jpg

lt side resonator 1.jpg



Edited 1 time(s). Last edit at 07/01/2023 10:07PM by Kard150.
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